National Geographic 80-20104 Скачать руководство пользователя страница 4

4

How To Set Up
Note: We recommend assembling your telescope for the first time in the daylight or in a 
lit room so that you can familiarize yourself with assembly steps and all components.

• Find a stable surface, like a table. Set the tripod on the table and open it until the tripod 
   spreaders are fully extended. 
• Snap the telescope tube into the U-shaped clamp on the top of the tripod head.  
• Insert the diagonal into the focuser and secure it by tightening the thumbscrews. 
• Place your chosen eyepiece into the diagonal. We recommend starting with the 20 mm 
because it will provide the widest field of view.

Using Your Telescope: 

Now you are ready to start observing! Put the 20 mm eyepiece into the diagonal to get 
the widest field of view. This wider field of view will make it easier to locate and track 
objects. To move the scope up, down and side to side, grip the telescope near where the 
tube meets the focuser and steadily move the tube until your target comes into view in 
the eyepiece. It is important to remember that the rotation of the Earth means objects 
will move out of your eyepiece fairly quickly.  Once you have found and focused on your 
desired target, you will have to track the object 
as it journeys across the night sky. For a closer 
look at an object, you can insert the 6mm 
eyepiece. The magnification will increase from 
20x to 67x.

Cleaning:

Your telescope is a precision optical device and keeping the optics free of dust and dirt is 
crucial for optimal performance. To clean the lenses (objective and eyepiece) use only a 
photo-grade soft brush or a lint-free cloth, like a microfiber cloth. Do not press down too 
hard while cleaning, as this might scratch the lens. If necessary, the cleaning cloth can be 
moistened with an optical glass cleaning fluid and the lens wiped clean using very little 
pressure. 

The eyepiece is NOT waterproof so do not spray fluids directly onto the glass or 

dip it in water. Never use harsh detergents! After you have finished cleaning an eyepiece, 
allow it to fully dry before storing.

Make sure your telescope is always protected against dust and dirt. 
After use, leave it in a warm room to dry off before storing.

Troubleshooting Guide:

Problem

Solution

No picture

Remove dust protection cap and sun-shield from the 
objective opening.

Blurred picture

Adjust focus using focus ring.

No focus possible

Wait for temperature to balance out.

Bad quality

Never observe through a glass  surface such as a 
window.

Focal Length Eyepiece

Magnification

400 mm

20 mm

20x

400 mm

6 mm

67x

Содержание 80-20104

Страница 1: ...hthisdevice WARNING CHOKINGHAZARD Smallparts Notforchildrenunder3years WARNING FUNCTIONALSHARPPOINT Notforchildren under3years WARNING Thelenscontainsleadthatmaybeharmful Washhandsaftertouching WARNIN...

Страница 2: ...ICE DEPARTMENT AND CAN SEND THE DEVICE IN TO BE REPAIRED IF NECESSARY DO NOT SUBJECT THE DEVICE TO TEMPERATURES EXCEEDING 60 C 140 F DISPOSAL KEEP PACKAGING MATERIALS LIKE PLASTIC BAGS AND RUBBER BAND...

Страница 3: ...Available Downloads Visit www esmanuals com Parts Overview 1 40 mm Objective Lens 2 Tabletop Tripod 3 Optical Tube Assembly OTA with Dew Shield 4 Tripod Head 5 Focus Wheel 6 Diagonal 7 Eyepieces H6 mm...

Страница 4: ...d target you will have to track the object as it journeys across the night sky For a closer look at an object you can insert the 6mm eyepiece The magnification will increase from 20x to 67x Cleaning Y...

Страница 5: ...e H20mm eyepiece into the diagonal and turn the focuser until the image is clear After mastering the H20mm eyepiece switch to the H12 5mm eyepiece and practice scanning and focusing Choose several ter...

Страница 6: ...yepiece An eyepiece is an optical accessory comprised of several lens elements It determines the magnification of a particular observing setup Barlow Lens A Barlow lens effectively increases the focal...

Страница 7: ...elescope with a focal length of 1000mm and a 100mm clear aperture has a focal ratio of f 10 Exit Pupil The exit pupil is the diameter of the beam of light coming out of the eyepiece To calculate exit...

Страница 8: ...light is reflected back up the tube to a flat secondary mirror which sits at a 45 angle in relation to the eyepiece Light bounces off of this secondary mirror and out through the eyepiece A reflector...

Страница 9: ...9...

Страница 10: ...ATTERY COMPARTMENT IN WATER NON RECHARGEABLE BATTERIES ARE NOT TO BE RECHARGED RECHARGEABLE BATTERIES ARE TO BE REMOVED FROM THE TOY BEFORE BEING CHARGED RECHARGEABLE BATTERIES ARE ONLY TO BE CHARGED...

Страница 11: ...ns collection tools and an experiment guide Parts Overview 1 20x Eyepiece 2 Focus Knob 3 Stage 4 Stage Clips 5 Objective Turret 5x 20x 45x 6 Illumination ON OFF Switch and Mirror 7 Base and Battery Ca...

Страница 12: ...ocation with adequate illumination the following basic rules should be observed Start with a simple observation at the lowest magnification Position the object or specimen in the middle of the stage u...

Страница 13: ...st magnification is not always the best for every specimen Troubleshooting Guide Problem Solution No recognizable image Turn on light Readjust focus Start with the lowest power objective 5x No image C...

Страница 14: ...oundbreaking book filled with descriptions and illustrations of observations he made with a telescope In this publication Hooke coined the term cell when describing the microscopic structures that he...

Страница 15: ...articular lens combination is determined by multiplying the magnification of the eyepiece lens and the magnification of the objective lens Due to the combination of lenses compound microscopes have hi...

Страница 16: ...irected toward the right eye and one to the left This results in a three dimensional view This type of microscope has a low magnification range that is geared toward observing larger solid objects lik...

Страница 17: ...scope magnification is determined by multiplying the magnifying power of the eyepiece and the magnifying power of the objective lens For example a 10x eyepiece with an objective lens set at 40x will e...

Страница 18: ...18...

Страница 19: ...19...

Страница 20: ...PHIC and Yellow Border Design are trademarks of the National Geographic Society used under license 2022 Explore Scientific LLC 1010 S 48th Street Springdale AR 72762 All rights reserved Made in China...

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